Fluid elevating and feeding means



Amin 29, 1924. Y ,492,147

L. E. VAN HISE ET AL FLUID ELEVATING AND FEEDING MEANS Filed April l0 1922 1N ENTORJ. 7 l Lester' Z U7 H/le, and dames I/ Ba/dh//Ni ATToRNEx Patented Apr. 29, 1924.

@METRE S ATES ' attain LESTER E. VAN HISE AND JAMES BALDWIN, OF LOS ANGELES, CALIFORNIA.

FLUID ELEVATING AND FEEDING MEMTS.

Application lfiled Apriiw, 1922.v SerialI-l'o. 551,244.

To all whom z't may concern.: Y

Be it known that we,.Lns'rER E VAN Hier. and JAMES V. BALDWIN, citizens of the United States` residing at Los Angeles, in the county of Los Angeles and State of California, have jointly invented new and useful Improvements in Fluid Elevating and Feeding Means, of which the following is a specification.

This invention relates to iuid elevating and feeding means, and particularly to a device which is adaptable for use in motor vehicles in that it may be used in an embodiment. to be described for causing flow of gasoline from a fluid supply tankl to a carburetor, without the necessity of using any extraneous means such as the. well-known vacuum system.

The invention -in one of its embodiments includes a pumping chamber arranged withinthe exhaust manifold of a vehicle and into which lgasoline is drawnj. Gasoline flowing into the pumping chamber is vaporized by the heat from the exhaust gases of the manifold and this vapor tends to force gasoline t0 a fluid reservoir; the operation being continuous or intermittent, tends to actively pump gasoline, and the gasoline so pumped is eventually conducted to the carburetor well..

This invention is an' improvement over our co-pending application for patent for fluid elevating and feeding means, filed September 3, 1921 in the United States Patent Ollice, Serial No. 498,434. This invention has for its object the provision of an improved fluid elevating and feeding means which will be superior inpoint of relative simplicity and inexpensiveness, taken' in conjunction with utility, durability and general efficiency and serviceability.

In the drawing:

Figure 1 illustrates an adaptation of the invention incorporated in conjunction with the power unit of a motor vehicle; and

Figure 2 is a fragmentary cross sectional view of the improved iiuid elevating and feeding means in its entirety, the same being associated with a well member and the Various elements to make an entity.

Corresponding parts in both figures are designated by the same reference characters.

Referring with particularity to the drawing, A. designates a motor vehicle incorporating the usual engine 1 havinga carburetor as shown in dotted lines at 2, with a liquid supply tank 3 and an exhaust manifold 4 associated with the engine member 1. The remaining features of the motor vehicle will not be taken u in detail. The fluid elevating and fee ing means is designated in its entirety by B, and the said means operates in conjunction with a reservoir member C. The means B has an energizing or pumping element X which includes a tubular well 5 closed at one end and having a stud 6 projecting from the base member thereof; and the well is also provided with screw threads 7 adjacent the open mouth thereof. Thus the member B has the characteristics of a bottle since it-is closed at one end and open at the other and may therefore he conveniently termed a pumping bottle even though it is of uniform diameter throughout. The said member 5 is adapted to pass through an opening 8 in the exhaust manifold 4 andheld positioned within said exhaust manifold 4 by the stud 6 projecting 'through a small perforation in. the manifold 4c, there being a nut 9 screw-threaded upon the stud and in engagement with a portion of the periphery of the manifold 4. Likewise the member 5 is provided with an annular flange 10 for maintaining the member 5 in position. An additional function of the flan c consists in sealing the opening surroun ing the point of admittance of the member 5 within the manifold 4. A T-head 11 has a portion thereof as 12 screw-threaded upon the threads 7 of the member 5 with further conduits 13 and 14 screwthreaded within the horizontal portion or the head portion of the l'-head, as shown at 15 and 16. A conduit 17 connects with the source of liquid supply or tank 3 with a terminal of a valve member a, the pipe 13 connecting with the other terminal of said valve. The pipe or 'conduit 14: connects with a valve member I), which valve member is associated with the well or res- `ervoir C. The reservoir C may comprise a A conduit 26 entends through the base member and leads to the carburetor 2.

Asillustrrnted, the reservoir C is preferably located above the carburetor well. This is in order that there may 'oe a gravity leed or liquid .from the reservoir to the car- 28 leading directly to the chambered portion' of the body. 'An annular cap nut 30 is screw-threaded upon the threads 29 and said cap nut holds in position one end oit theA pipe 13, the said pipe being provided with an annular vflange 31 to accomplish said function. An end ci the member 27 is relieved and internally screw-threaded vas shown at 32, and a flanged annular nut or nipple v33 has a portion thereof screwthreaded upon the part 32, while a second portion thereof is provided with `screw threads as at 3.a for reception of an annular cap nut 35. Said cap nut contines a flanged end 36 of .the conduit 17. llhe nutV 33 is provided with a valve seat 37, and a ball member 38 is normally seated thereon, being maintained in position byfa compression spring'39 within the chamber of the member 27. The valve a may be 'placed anywhere in the line 17, preferably, however, beyond the point of'connection of the overflow pipe 25 with the conduit 17 and the valve?) may be associated with the cap or .top 19 of the well C. The well@ is provided with the usual vent opening and plug as illus-4 tra-ted at 40.,

.The chief improvement of thisv invention vconsists in theintroduction within the mem- .ber 5 of a tubular member c, said tubular 4member being open at an end thereof as at 41 and closed at the opposite end by a plug 42. rlhe saidv member c. vis held in position spaced from the interior of the member 5 by a screw member projecting through the T-head and in screw-threaded engagementv with the plug 42. lt is to be noted upon reference to thedrawing'that the energizer or pumping means w may be placed in'a'vvertical position within the eX- haust manifold and that a portion thereof extends outwardly from the manifold. The result. accomplished by the introduction of the means c is best described by stating the 'operation ofthe device Vas awhole.

If liquid i'sconducted from the tank 3 through the pipe 17 land allowed to ilow' within the member 5, the liquid will rise a certain .distance within the member c until nasale? sion or the liquid within the member 5, .and as the member c will likewise be heated any gas coniined within it will also tend to expand. bviously the liquid will tend to gasity and exert a pressure within the member 5 vand the member c. This pressure will become' great enough to i'orce the liquid out vof the member c and *force any liquid within the member 5 back toward the T-head 11. 'lhe check valve o will prevent the gasoline or other liquid from rlowing back through the pipe 13 and asa consequence the gasoline will be forcedthrough the pipe 111 .past the check valve Z and into the reservoir C. rlhis forcing of the gasoline into'the pipe 14 will cause a reduction of pressure tending toward an equi-v librium, and likewise tend to create a vacuum due to the condensation oi the vapor in the; top half of the member 5 when in contact with the cooler surfaces land liquid which will aid in the drawing or liquid from the source of supply. We will thus have an vexpansion or the liquid by a gasiiication thereof, whichexpansion will cause a pressure forcing gasoline to the well member, followed `by a contraction or the gas which will draw more liquid into the pump chamber. lt is to be particularly noted that the arrangement of the member c within the member 5 allows a portion. thereof to be above the normal influence of the heated gases passing through the. intake manifold 4. Likewise by extending the member 5 outwardly froml the exhaust manifold we have what may be termed a condensation chamber. lnl other words, one portion of the member 5, as well as the member c, will be subjected to heat influence, whilea second portion will tend to be cool. rlhe member 0' performs many useful functions vin that -it restricts the area in the pump chamber at the zone of direct heat influence. lt is essential that the area thatrmayexist within the annular space between the mem bers c and 5 should be small in proportion to the condensation space immediately above the same. ln other words, the l'condensation area must be greater than the vaporization area in order to create the necessary pressure and vacuum to cause flow of gasoline or other liquidfrom its source of supply to the tank C. Another important function of the member c resides in the fact that it is so arranged that it permits of adjustment of pumping speed; it increases the cooling area, aids in lowering pressure for a given amount of liquid fuel vaporized and likewise cushions the pumping action of the device, as it is to be noted that the open mouth of the member c is pointed toward the base 'of the member 5- and as it heats, any gas confined in its upper extremity is forced downwardly exerting a pressure upon any liquid within the same and within the well 5. This pressure of course fiuctuates and any liquid entering the well through the pipe 13 being cool contacts with the vapor passing through the annular space between the members 5 and c tending to condense said vapor, reduce the pressure thereof, and likewise form a vacuum aiding in the drawing of more liquidV through the pipe 13 from its source of su ply.

articular attention is drawn to the fact that the overflow pipe 25 passes directly to and connects with the tank 3. A. member 44v is placed on the line 25, the said member 44 being provided with radiating vanesso as to cool any liquid iiowing through said plpe. We likewise provide a member 44 for the pipe line 17. Thus as liquid, such as gasoline, is pumped into the reservoir C the overiiow of liquid passing through the pipe 25 is cooled. Quite obviously any liquid such as gasoline pumped to the reservoir C would be warm or hot, as the case might be, and it is desirable to remove as much heat from this liquid or gasoline as possible before assing same to the carburetor 2. Obviously, iquid such as gasoline fiowing through the pipe 25 to the tank 3, then from the tank 3 through the line 17 connecting with the pump, will tend to remove heat from said liquid. Attention is directed to the fact that a turning of the screw member 43 will raise or lower the element c so that a variation in the pumping action may be effected. If the means 0 were raised a smaller area thereof would be subjected to direct heat infiuence and vice versa for a movement in the opposite direction. Ve have by the construction illustrated provided a system in which the heat content of the liquid flowing within the pipes may be directly regulated.

It is obvious that various changes and modifications may be made in departure from the particular description and showing of the accompanying drawing in adapting lthe invention to varying conditions and requirements of use and service, without departing from the true spirit of the invention and the scope of the appended claims.

Having thus disclosed our invention, we claim and desire to secure by Letters Patent: 1. In a liquid-fuel pumping apparatus of the class described, the combination with a source of liquid-fuel supply and the exhaust manifold of an engine, of a pumping bottle having its closed end disposed within said manifold, valved intake and discharge connections communicatin with the up er end of the bottle, anda tu ular shell c osed at one end and open at the other and arranged' within the bottle to provide a liquid sealed manifold, a' cap fitted to the open end of said bottle, valved intake and discharge connections communicating with said cap, and a tubular shell closedat oneend and open at the other and arranged within the bottle to provide a liquid sealed vapor chamber when the bottle 1s supplied with liquid-fuel.

3. In a liquid-fuel pumping apparatus of the class described, the combination with a source of liguid-fuel supply and the exhaust manifold o an engine, of a pumping bottle having its closed end disposed within said manifold, a cap fitted to the open end of said bottle, valved intake and discharge connections communicatin tubular shell carrie by said cap and suspended within the bottle to provide a relatively constricted space between the shell and the bottle and also provide a liquid sealed vapor chamber when the bottle is supplied with liquid-fuel.

4. In a liquid-fuel pumping apparatus of the class described the combination with a source of liquid-fuel supply and the exhaust manifold of an engine, of a pumping bottle having its closed end disposedwithin said manifold, a cap fitted to the open end of said bottle, valved intake and discharge connections communicating with said cap, and a tubular shell adjustably carried by said cap and sus ended within the bottle to provide a relative y constricted space between the shell and the bottle and also provide a liquid sealed vapor chamber when the bottle is supplied with liquid-fuel.

5. A thermal ump of the class 'described including a tubu ar receptacle having valved intake and discharge connections, and a tubular shell open at one end and closed at the other and arranged within the tubularreceptacle to provide a relatively constricted passage between the shell and the receptacle and to also provide a liquid sealed vapor chamber within the shell when the receptacle is supplied with fiuid. I

6. In a Huid feedingvdevice of the class described, the combination with a source of heat and a source of Huid supply. a pumping bottle having its closed lend disposed within the zone of heat influence, valved in,- take and discharge connections communicating with the open end of the bottle, and a tubular pumping shell arranged within the bottle and having a closed end and an open with said cap, and a lll) end, the said open end being disposed toward the bottoni o the bottle4 and being sealed by liquid Within the bottomthereby eooperating with the said closed end to, provide a sealed vapor chamber adapted to discharge toward the bottom of the bottle'when the eiiect of heat on the bottom of said bottle expands the vapor in said 'vapor chamber.

7, A fuel pumping apparatus including the combination with the exhaust manifold of an engine, a pumpin bottle arranged partly Within the manifo d,7 a fuel storage tank, a feed pipe leading from said storage tank to the open end of the bottle, a check Valve in said feed pipe, a discharge pipe also communicating with the open end of iig-eater the bottle, a Check valve in said discharge line, a receiving Well Jfor holding fuel expelled from said discharge line, a connection between the receiving Well and the carburetor, an overflow pipe line between the rec'eiving Well and the storage tank, and cooling vanes arranged on said feed and ever- 

